diff --git a/consts.php b/consts.php
index cd252c1..b9dd994 100644
--- a/consts.php
+++ b/consts.php
@@ -97,6 +97,7 @@
     'api.silverstripe.org',
     'cow',
     'silverstripe-config',
+    'markdown-php-codesniffer',
 ];
 
 const CMS_TO_REPO_MAJOR_VERSIONS = [